Hi,
I'm trying to emit a conditional move in the ARM backend for a custom
intrinsic. Basically, I want to emit the following the following
instruction sequence:
cmp r0, r1
moveq r2, #1
To implement this, I first emit a compare instruction and then I'm
trying to emit the conditional move, which is failing.
BuildMI(&MBB, DL, TII->get(ARM::CMPrr))
.addReg(MI.getOperand(1).getReg())
.addReg(MI.getOperand(2).getReg())
.addImm(ARMCC::EQ);
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::MOVr),
MI.getOperand(0).getReg())
.addImm(ARMCC::EQ)
.addImm(1)
.addReg(0); // 's' bit
But with the last conditional move, I am a bit lost. The result of the
condional move should be saved in operand 0. Can someone help on how to
emit this instruction?
Cheers,
Robert